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A novel framework for the carbon reduction performance of power grids:A case study of provincial power grids within the China Central Power Grid

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Frontiers of Engineering Management 2024年第3期11卷 455-468页

作者： Lei JIANG Chen LING Qing YANG Pietro BARTOCCI Shusong BA Shuangquan LIU China-EU Institute for Clean and Renewable Energy Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Coal Combustion Huazhong University of Science and TechnologyWuhan 430074China RISE Processum AB SE-89122 ÖrnsköldsvikSweden HSBC Business School Peking UniversityShenzhen 518055China System Operation Department. Yunnan Power Grid Co.LtdKunming 650011China

Power grids play a crucial role in connecting electricity suppliers and *** facilitate efficient power transmission and energy management,significantly contributing to the transition toward low-carbon practices across both upstream and downstream *** managing carbon reduction in the power industry is essential for enhancing carbon reduction efficiency and achieving dual-carbon *** studies have focused on the outcomes of carbon reduction efforts rather than the management ***,when power grids prioritize the process of carbon reduction in their management,they are more likely to achieve better *** address this gap,we propose an evaluation model for managing carbon reduction activities in power grids,comprising the carbon management efficiency(CME)module based on the maturity model and the carbon reduction efficiency(CRE)module based on the entropy *** CME module provides a scorecard corresponding to a detailed and continuous evaluation model for carbon management processes to calculate its ***,the CRE module relates carbon reduction results to the development direction of the government and power grid,allowing for effective adjustments and updates based on actual *** evaluation model was applied to provincial power grids within the China Central Power *** results reveal that despite some fluctuations in carbon reduction performance,provincial power grids within the China Central Power Grid have made continuous progress in carbon reduction *** to the synergy model,there is evidence suggesting that power grids are steadily improving their carbon reduction performance,and a more organized approach would lead to a greater degree of *** evaluation model applies to power grids,and its framework can be extended to other industries,providing a theoretical reference for evaluating their carbon reduction efforts.

关键词： power grid carbon reduction evaluation model maturity model synergy model

The Policy of Energy Saving,Pollution Control and carbon reduction based on the Cause Analysis of“Power Restriction”Event

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Journal of Resources and Ecology 2024年第4期15卷 889-897页

作者： YANG Churui ZHOU Xiaolin LIU Zhu WANG Yu’an Beihang University Beijing 100191China Gansu Agricultural University Lanzhou 730070China Beijing University of Technology Beijing 100124China

In recent years,the“power restriction”measures were taken in many localities,industrial electricity consumption was interrupted,mainly in the“two high”(high energy consumption and high pollutant emission)*** the“power restriction”event in 2021 as an example,this event affected a wide range of regions and disrupted people’s *** not only refers to the power switch and rationing measures taken by individual regions,but also includes differentiated policies implemented by over 20 provinces to limit power supply and industrial *** paper investigated in detail and summarized the different requirements of power restriction across the country,through the comparison of annual growth rates of power generation and industrial added value,the comparison results of energy intensity,electricity production,power consumption and the industrial growth rate in each province are *** enterprises and related industrial chains were most heavily affected by the“power restriction”event,mainly in steel,cement,electrolytic aluminum,industrial silicon,textile printing and dyeing,chemical fiber,chemical and other enterprises with high energy consumption and high pollutants *** measures to limit electricity will affect the normal production of enterprises to a certain extent,leading to not only the decrease of production efficiency,but also the increase of energy consumption and pollutant emission per unit *** management measures such as differentiated electricity price have limited effect on the output of“two high”industrial products,and the economic leverage of differentiated electricity price is gradually being diluted by the price rise of end *** paper analyzed the reasons and explored several key problems that need special *** recommended certain countermeasures for its appropriate application in the future.

关键词： power restriction pollution control carbon reduction orderly power consumption

Summary of Steam System Optimization and Energy Saving and carbon reduction Practice in Yanshan Petrochemical Company

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Asian Agricultural Research 2022年第8期14卷 39-43页

作者： Jianxin GAO Sinopec Beijing Yanshan Petrochemical Co. Ltd.Thermal Power PlantBeijing 102500China

This paper analyzes the main problems of Sinopec Beijing Yanshan Petrochemical Co.,Ltd.,such as decentralized steam system layout,many types of fuels,obvious increase in fuel cost,low operation efficiency of turbine and boiler and high self consumption loss,and puts forward and implements optimization and improvement measures such as pressure raising transformation of natural gas system,adjustment of energy consumption structure,reduction of energy consumption cost,improvement of steam production quality and equipment *** results showed that compared with the fuel consumption in 2018,the consumption of coal coke was reduced by 550000 t,the consumption of natural gas was increased by 170000 t,and the total consumption of fuel gas and fuel oil was increased by 50000 t,equivalent to 246000 t of standard coal;the purchased electricity was increased by about 5×10^(8) kW·*** power trading and 14.76 MW distributed photovoltaic projects were carried *** to the calculation of 1400-1600 h annual power generation in class II photovoltaic areas and the emission factor of North China regional power grid baseline,the annual emission reduction was about 55000 t CO_(2) in *** the above transformation,the goal of zero-coking is achieved;the steam consumption of units is reduced by 21.5%,the steam production of boilers is reduced by 24.9%,and the annual emission reduction is about 760000 t CO_(2),which has achieved good results.

关键词： Steam system Fuel structure Energy structure Equipment efficiency Steam loss Optimization Energy saving carbon reduction

Wetting between molten iron and prereduced ilmenite with carbon

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Transactions of Nonferrous Metals Society of China 2010年第5期20卷 924-929页

作者：王玉明袁章福赵宏欣熊绍锋姜伟忠李肇毅 Department of Energy and Resources Engineering College of EngineeringPeking University Institute of Ironmaking Research Baoshan Iron and Steel Co.Ltd State Key Laboratory of Multi-Phase Complex System Institute of Process EngineeringChinese Academy of Sciences

An interfacial study between molten iron and the prereduced ilmenite with carbon was conducted at different melting temperatures by the sessile droplet *** wetting characteristics between molten iron and the prereduced ilmenites with carbon were investigated by measuring contact angle of the droplet of molten iron on the prereduced ilmenite *** images of the interface were also examined by the optical microscope and SEM equipped with *** volume of molten iron increased with the melting temperature increasing when titania or high-content titania slag was used as the *** contact angle decreased with the melting temperature increasing and it was independent on time at constant *** contact angle was positively correlated with the reduction degree of the ilmenite,but the work of adhesion was negatively correlated with *** smelting temperature was beneficial to the separation of iron and Ti *** permeability of molten iron into the prereduced ilmenite with carbon was more obvious with reduction degree increasing owing to the high porosity of prereduced ilmenite.

关键词： molten iron prereduced ilmenite wetting interfacial permeability contact angle carbon reduction

Scientific and technological innovations of wastewater treatment in China

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Frontiers of Environmental Science & Engineering 2024年第6期18卷 43-48页

作者： Hui Huang Rui Ma Hongqiang Ren State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

The“dual-carbon”strategy promotes the development of the wastewater treatment sector and is an important tool for leading science and technology *** on the global climate change and the new policies introduced by China,this paper described the new needs for the development of wastewater treatment science and *** offered a retrospective analysis of the historical trajectory of scientific and technological advancements in this *** bibliometrics,it delineated the research hotspots within wastewater treatment,notably highlighting materials genomics,artificial intelligence,and synthetic ***,it posited that,in the future,the field of wastewater treatment should follow the paths of technological innovations with multi-dimensional needs,such as carbon reduction,pollution reduction,health,standardisation,and *** purpose of this paper was to provide references and suggestions for scientific and technological innovations in the field of wastewater treatment,and to contribute to the common endeavor of moving toward a Pollution-Free Planet.

关键词： Wastewater treatment Dual-carbon strategy Technological innovation carbon reduction

Two-Dimensional Transition Metal Oxide and Chalcogenide-Based Photocatalysts

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Nano-Micro Letters 2018年第2期10卷 40-66页

作者： Farjana Haque Torben Daeneke Kourosh Kalantar-zadeh Jian Zhen Ou School of Engineering RMIT University

Two-dimensional(2D) transition metal oxide and chalcogenide(TMO&C)-based photocatalysts have recently attracted significant attention for addressing the current worldwide challenges of energy shortage and environmental pollution. The ultrahigh surface area and unconventional physiochemical, electronic and optical properties of 2D TMO&Cs have been demonstrated to facilitate photocatalytic applications. This review provides a concise overview of properties, synthesis methods and applications of 2D TMO&C-based photocatalysts. Particular attention is paid on the emerging strategies to improve the abilities of light harvesting and photoinduced charge separation for enhancing photocatalytic performances,which include elemental doping, surface functionalization as well as heterojunctions with semiconducting and conductive materials. The future opportunities regarding the research pathways of 2D TMO&C-based photocatalysts are also presented.

关键词： Hydrogen evolution reaction Pollutant degradation Water splitting Layered material Solar carbon reduction

Frontiers of CO_(2)Capture and Utilization(CCU)towards carbon Neutrality

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Advances in Atmospheric Sciences 2022年第8期39卷 1252-1270页

作者： Lingyun ZHANG Yanfang SONG Jialin SHI Qun SHEN Deng HU Qiang GAO Wei CHEN Kien-Woh KOW Chengheng PANG Nannan SUN Wei WEI CAS Key Laboratory of Low-carbon Conversion Science&Engineering Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100China Key Laboratory for carbonaceous Wastes Processing and Process Intensification Research of Zhejiang Province University of Nottingham Ningbo ChinaNingbo 315100China New Materials Institute the University of Nottingham Ningbo ChinaNingbo 315100China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China

CO_(2)capture,utilization,and storage(CCUS)technology is a rare option for the large-scale use of fossil fuels in a low-carbon way,which will definitely play a part in the journey towards carbon *** the CCUS nexus,CCU is especially interesting because these processes will establish a new“atmosphere-to-atmosphere”carbon cycle and thus indirectly offer huge potential in carbon *** study focuses on the new positioning of CCUS in the carbon neutrality scenario and aims to identify potential cutting-edge/disruptive CCU technologies that may find important application opportunities during the decarbonization of the energy and industrial *** this end,direct air capture(DAC),flexible metal-framework materials(MOFs)for CO_(2)capture,integrated CO_(2)capture and conversion(ICCC),and electrocatalytic CO_(2)reduction(ECR)were selected,and their general introduction,the importance to carbon neutrality,and most up-to-date research progress are summarized.

关键词： carbon neutrality carbon reduction decarbonization CO_(2) CCU

Properties and Hydration Mechanism of Cementitious Materials Prepared from Calcined Coal Gangue

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Journal of Renewable Materials 2023年第3期11卷 1223-1236页

作者： Zhaopeng Wang Shaowu Jiu Hui Li Kaifeng Zhang Simeng Cheng School of Materials and Engineering Xi’an University of Architecture and TechnologyXi’an710055China

The preparation of cementitious materials by replacing part of the cement with activated coal gangue is of great significance to the cement industry in terms of carbon reduction and coal-based solid waste *** this paper,cementitious material was prepared by firing activated coal gangue under suspension conditions and batching it with limestone powder using Inner Mongolia coal gangue as raw *** optimal ratio was determined by testing the strength changes of the cementitious material at 3,7,and 28 days of hydration,and the hydration process and mechanism were explored by combining the pore structure,heat of hydration,chemical composition,phase composition,and microscopic morphological characteristics of the hydration *** results showed that the active materials formulated from activated gangue and limestone powder can be used to prepare cementitious materials with good performance at the level of 30%–50%replacement of *** optimal ratio was 30%replacement of cement,and the mass ratio of calcined gangue to limestone powder was 2:*** 3 days compressive strength of this ratio was 28.8 MPa,which was only slightly lower than that of ***,the 28 days compressive strength of samples reached 67.5 MPa,which was much higher than that of the reference *** the hydration of this cementitious material,not only does the activated coal gangue react with the Ca(OH)_(2)formed by hydration to form C–S–H gel,but CaCO3 also participates in the reaction to form a new phase of carbon aluminate,and the two effects together promote the development of the later strength of the *** paper can provide a reference for carbon reduction in the cement production process and comprehensive utilization of coal gangue.

关键词： Coal gangue carbon reduction hydration suspension calcination

Reducing the carbon emissions from Qianxi tomato fruits preservation by cold atmospheric plasma

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International Journal of Agricultural and Biological Engineering 2023年第5期16卷 213-220页

作者： Tao Jin Yan Chen Chenwei Dai Jimin Deng Qinghua Xu Zhengwei Wu School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Joint Laboratory of Plasma Application Technology Institute of Advanced TechnologyUniversity of Science and Technology of ChinaHefei 230031China Anhui Academy of Medical Sciences Hefei 230061China Anhui Institute for Food and Drug Control Hefei 230051China CAS Key Laboratory of Geospace Environment University of Science and Technology of ChinaHefei 230026China

China has pledged to reach its dual-carbon goals(i.e.,carbon peak and carbon neutrality)at the end of *** reduce carbon emission in food preservation industry,the preservation effects of cold atmospheric plasma intermittent treatment(1 min/6 h each day,PL4)combined with 15℃ and 4℃ only on Qianxi tomato fruits during 7 d storage were *** indicated that the firmness,L*,sensory taste,glutathione(GSH)content,mineral(Fe,P,K)content,polyphenol oxidase activity of PL4 tomatoes were significantly increased than that in Control during earlier period storage,with worse weight loss,titratable acid,a*,b*,lycopene content,·OH radical scavenging capacity and same moisture content,total soluble solids,polysaccharide content,total phenolics content,total flavonoid content,ascorbic acid content,1,1-diphenyl-2-picrylhydrazyl radical scavenging capacity,pectin methylesterase ***,the power and R134a consumption of PL4 were highly decreased by around 56.4 kW·h and 0.3 g respectively during whole storage as compared to Control,and reduced more than 99.8%carbon emission based on equipment using *** in all,this study illustrated that PL4 treatment can be applied as an ecofriendly,low carbon and sustainable preservation strategy for short-term storage of fruits under 4℃ or higher temperature.

关键词： cold atmospheric plasma carbon reduction Qianxi tomato fruits food preservation